Electronic Transport in Double-Nanowire Superconducting Islands with Multiple Terminals

We characterize in situ grown parallel nanowires bridged by a superconducting island. The magnetic-field and temperature dependence of Coulomb blockade peaks measured across different pairs of nanowire ends suggest the presence of a subgap state extended over the hybrid parallel-nanowire island. Bei...

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Bibliographic Details
Published in:Nano letters 2022-07, Vol.22 (14), p.5765-5772
Main Authors: Vekris, Alexandros, Estrada Saldaña, Juan Carlos, Kanne, Thomas, Hvid-Olsen, Thor, Marnauza, Mikelis, Olsteins, Dags, Wauters, Matteo M., Burrello, Michele, Nygård, Jesper, Grove-Rasmussen, Kasper
Format: Article
Language:English
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Summary:We characterize in situ grown parallel nanowires bridged by a superconducting island. The magnetic-field and temperature dependence of Coulomb blockade peaks measured across different pairs of nanowire ends suggest the presence of a subgap state extended over the hybrid parallel-nanowire island. Being gate-tunable, accessible by multiple terminals, and free of quasiparticle poisoning, these nanowires show promise for the implementation of several proposals that rely on parallel nanowire platforms.
ISSN:1530-6984
1530-6992
DOI:10.1021/acs.nanolett.2c01161